#include<iostream>
#include<vector>
#include<list>
#include<deque>
#include<algorithm>
#include<map>
#include<string>
using namespace std;
map<string, double> score;
score["a"] = 90.2;
score["python"] = 89.2;
score["lili"] = 60.012;
score.insert(map<string, double>::value_type("ni", 89.5));
map<string, double>::iterator i;
for (i = score.begin(); i != score.end(); i++) {
	cout << i->first << " " << i->second << endl;
}

for_each(score.begin(), score.end(), display());
i = score.find("a");
if (i != score.end()) {
	cout << i->second << endl;
}


	for (i = score.begin(); i != score.end(); ) {
		if (i->second < 90.0) {
			i=score.erase(i);
		}
		else {
			++i;
		}
	}
	for_each(score.begin(), score.end(), display());

}
